User Manual

FUSB307BGEVB
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3
TYPE−C SIGNAL CONNECTIONS
The FUSB307B evaluation board allows different ways of
connecting to another Type−C device or controlling the
signals of the Type−C receptacle based on the type of testing
that is required.
CC Pins
The Type−C CC1 and CC2 pins are directly connected to
the Type−C receptacle J1 on the board. Each CC pin has
a series jumper (JP7, JP14) which is useful to measure
voltage and current. Note that the FUSB307B evaluation
board contains the minimum cReceiver capacitance
specified in the USB PD specification for the CC pins which
is 220 pF. This capacitance is C27 and C28 in the schematic.
VBUS 5 V
VBUS is used differently based on the Type−C port type.
The FUSB307B controls an integrated load switch
(FPF3695) for Sink and Source path depending on what
device is connected. In each case, an LED indicator (SNK
ON and SRC ON) tells which VBUS power path is
established. A test point for VBUS voltage sensing
(VBUS_S) is located near J1. The EVB is designed to supply
5.0 V VBUS from PC USB power or an external supply.
This option can be configurable by JP16 as shown below.
Figure 4. V5P0 Power Selection
• Jumper on VBUS_MC: PC USB power to V5P0
• Jumper off: external power (5 V test point) to V5P0
• Jumper on VBUS IN: VBUS SRC (from source device)
power to V5P0
VBUS Greater Than 5 V
To offer VBUS greater than 5 V, the 12 V test point can be
used as an input for a VBUS level of 9 V, 12 V, 15 V, or 20 V.
This input is controlled by the FPF2895C load switch and
the SRV_HV_ON signal from the mcu. If this high voltage
VBUS will be used, the JP8 jumper needs to be shorted so
that this high voltage VBUS can be switched onto the VBUS
rail to the Type−C connector at J1.
VCONN
VCONN can be supplied to the FUSB307B externally
through the VCONN test point found along the External
Power Inputs test points.
USB2.0 and SBU
They are left open in the Type−C connector with no
connections to other circuitry on the board. Test points are
near the Type−C connector J1.
STATUS LED’S
The following status LEDs are provided on the evaluation
board. All of the LEDs can be disconnected by JP11 and
JP12.
Figure 5. LED Indicators
Table 1. STATUS LED’S
LED Status
D1
on when GPIO2 is active (low)
D2
on when DBG_N is in active (low)
D3
on when SNK_ON is active (high)
D4
on when SRC_ON is active (high)
D5
on when SRC_HV_ON is active (high)
D6
on when V3P3_SYS is present (high)
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